1. Open the QQ music application: Open the QQ music application on the mobile phone and make sure that the Bluetooth device is connected.

2. Enter the setting interface: on the main interface of QQ Music, click the setting icon or menu button in the upper right corner.

3. Enter music settings: in the settings interface, find and click the "Music Settings" option.

4. Open the Bluetooth album picture settings: in the music settings interface, find and click the "Bluetooth album picture" option.

5. Select or upload album pictures: According to your needs, you can select existing album pictures or upload your favorite pictures as album pictures.

6. Confirm the setting: After selecting the photo album picture, click OK or Save the setting to make it effective. QQ Music is a music player and music entertainment platform developed and operated by Tencent. It provides rich music library resources, including a large number of music tracks, albums, singers and lyrics. Users can listen to music online, create their own song list and share music with other users through QQ music application or web version.